Resuggesting, thanks Clyde.

SALE 1

Unknown, was sold with a strange specialized ks australium ambassador for something.

https://backpack.tf/profiles/76561198447316857#!/compare/1563148800/1563494400

https://backpack.tf/profiles/76561198193466351#!/compare/1540771200/1563926400

SALE 2, 3 & 4

69.99 on june 10 (69.99 / 1.81 = 38.66 rounding to 39 keys)

70 on july 16 (70 / 1.82 = 38.46 rounding to 38 keys)

70 on july 19 (70 / 1.83 = 38.25 rounding to 38 keys)

https://marketplace.tf/items/tf2/30177;5;u7

History for july 16: https://backpack.tf/item/7706721639

SALE 5

Unknown sale to known quickbuyer

https://backpack.tf/profiles/76561198123219305#!/compare/1563235200/1563321600

https://backpack.tf/profiles/76561198002757046#!/compare/1563148800/1563235200

SALE 6

Likely sold for 38 keys(not 100% sure though, as the sale was extremely quick)

https://backpack.tf/profiles/76561198002757046#!/compare/1563235200/1563321600

https://backpack.tf/profiles/76561198081361662#!/compare/1563235200/1563321600

This sale was dumped to sale 7, not using either.

SALE 7

Sold for 25 keys + 3.11 refined

https://backpack.tf/profiles/76561198081361662#!/compare/1563321600/1563408000

https://backpack.tf/profiles/76561198150928662#!/compare/1563148800/1563321600

Rounds to 25 keys

As mentioned in sale 6, this sale was dumped immediately (or I got the sale wrong)

SALE 8

Bulk for ghosts hkc

https://backpack.tf/profiles/76561198043147281#!/compare/1559433600/1559692800

https://backpack.tf/profiles/76561198150592921#!/compare/1559606400/1559692800

SALE 9

Sold for 19 keys + strange australium grenade launcher

https://backpack.tf/profiles/76561198074745301#!/compare/1566086400/1566259200

https://backpack.tf/profiles/76561198047168424#!/compare/1566172800/1566259200

19 + 13.5 = 32.5 rounding to 33 keys

Eh, this is basically a pure sale, sold in 2 days as well, calling this low.

SALE 10

Not sure

https://backpack.tf/profiles/76561198086291976#!/compare/1561507200/1564617600

https://backpack.tf/profiles/76561198976710074#!/compare/1564704000/1566259200

SALE 11

Sold for 40 keys

https://backpack.tf/profiles/76561198158206236#!/compare/1565049600/1565136000

https://backpack.tf/profiles/76561198093179826#!/compare/1564963200/1565136000

https://gyazo.com/46802f8a81b787bb7ae034a52f1b766c

Credits to clyde for the screenshot.

SALE 12

Sold with ghosts elf esteem + searing counterfeit billycock + 1 key + 3 tod tickets (1.54 keys) + 2.77 refined for electrostatic headsplitter

https://backpack.tf/profiles/76561198168944782#!/compare/1560643200/1560816000

https://backpack.tf/profiles/76561198158206236#!/compare/1560729600/1560816000

Taking this and using for headsplitter, as it has less sales (should be used there either way imo)

CLASSIFIEDS

https://gyazo.com/f784694afa45dd5f4274a809fe705a7b

Sales at 33 and 40. Marketplace sales at 38, 38, and 39. 33 not only sold in 2 days, for basically pure, but there are 4 sales at higher. Taking 38-40 keys.